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Related Concept Videos

Tooth Anatomy01:21

Tooth Anatomy

The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
Teeth01:15

Teeth

The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
Cranial Bones: Superior and Posterior View01:14

Cranial Bones: Superior and Posterior View

The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
The Hyoid Bone01:12

The Hyoid Bone

The hyoid bone is a small U-shaped bone located in the upper neck at the level of the inferior mandible, with its tips pointing posteriorly. It does not directly articulate with any other bone in the body. The hyoid acts as the attachment site for the tongue, the larynx, and the pharynx. It is held in position by a series of small muscles attached from above or below. These muscles help to move the hyoid up/down or forward/back in coordination with movements of the tongue, larynx, and pharynx...
Ankle Joint01:10

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...

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Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
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Syndontia with talon cusp.

Shalini Gupta1, Ankita Tandon, Anil Chandra

  • 1Department of Oral Pathology, Faculty of Dental Sciences, Chhatrapati Shahuji Maharaj Medical University, Lucknow, India.

Journal of Oral and Maxillofacial Pathology : JOMFP
|August 28, 2012
PubMed
Summary
This summary is machine-generated.

This case report details an extremely rare dental anomaly: the fusion of a supplemental tooth with a normal tooth, accompanied by a talon cusp. Early diagnosis is crucial for managing potential esthetic and crowding issues in patients with this rare condition.

Keywords:
Fusiongeminationmacrodontiatalon cusp

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Area of Science:

  • Dentistry
  • Oral and Maxillofacial Surgery
  • Developmental Biology

Background:

  • Dental developmental anomalies, including macrodontia, can occur independently or with other congenital conditions.
  • Tooth fusion, often observed in the anterior maxilla, involves the joining of two teeth.
  • Supplemental teeth are extra teeth beyond the normal series.

Observation:

  • This case presents a rare instance of fusion between a supplemental tooth and a tooth from the normal series.
  • The anomaly was further complicated by the presence of a talon cusp, a developmental variation.
  • This specific combination of dental anomalies is exceptionally rare, with few documented cases.

Findings:

  • The study reviews the etiology, prevalence, clinical presentation, and management strategies for fused teeth and talon cusps.
  • Macrodontia of anterior teeth can result from fusion or gemination, affecting primary or permanent dentitions.
  • The reported case highlights a unique presentation of dental anomalies.

Implications:

  • Early identification of such rare dental anomalies is essential for effective patient management.
  • Untreated conditions can lead to esthetic concerns and significant tooth crowding.
  • This case contributes to the limited literature on complex dental developmental defects.